CN218122297U - Buckle self-locking mechanism and optical fiber adapter - Google Patents
Buckle self-locking mechanism and optical fiber adapter Download PDFInfo
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- CN218122297U CN218122297U CN202221214101.5U CN202221214101U CN218122297U CN 218122297 U CN218122297 U CN 218122297U CN 202221214101 U CN202221214101 U CN 202221214101U CN 218122297 U CN218122297 U CN 218122297U
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Abstract
The invention discloses a buckle self-locking mechanism and an optical fiber adapter, which comprise a dust cap and a lower main body, wherein the dust cap is a hollow cylinder with an opening at one end, the lower main body is a hollow cylinder with two openings and annular steps, the lower main body comprises an upper sleeve and a lower sleeve, the upper sleeve is sleeved with the dust cap, the lower sleeve is provided with external threads, the bottom end of the dust cap is provided with a plurality of wedge-shaped elastic pieces, each wedge-shaped elastic piece is in a descending wedge shape, each wedge-shaped elastic piece is propped against the upper sleeve, the upper sleeve is provided with a limiting assembly which is matched with the wedge-shaped elastic pieces to limit the axial and circumferential movement of the dust cap and the lower main body, and the bottom end of the dust cap is circumferentially provided with a plurality of wedge-shaped elastic pieces.
Description
Technical Field
The invention relates to the technical field of optical fiber connecting components, in particular to a buckle self-locking mechanism and an optical cable adapter.
Background
With the continuous development of science and technology, the computer network industry is also continuously developing. In recent years, in order to meet the requirement of flexible connection between different devices and systems, a movable connector between optical fibers has been developed, which is generally called an optical fiber adapter, and is mainly applied to communication, local area network, fiber-to-the-home, high-quality video transmission, optical fiber sensing, instrumentation and instrumentation, CATV (community antenna television), and the like; the fiber optic adapter functions as an open cavity into which a fiber optic splice is inserted. In the prior art, plastic plug-in plugs and protective caps are generally inserted into two ports respectively to protect and prevent dust for the optical fiber adapter, but because one end of an opening cavity of the optical fiber adapter is often plugged in and pulled out in the use and construction process, and a ceramic insertion tube in the optical fiber adapter needs to be strictly protected, the protective cap needs to be covered on the port when the port is not used, and particularly in a machine room with a severe construction environment, dust can affect the connection loss of the optical fiber adapter after entering the ceramic opening tube. Meanwhile, under the condition that the fiber to the home is increasingly popularized, the fiber adapter is installed on a fiber access panel of each home and is used as a daily-used network port, and the fiber plugging times are large. During the transmission of the optical fiber, if the eyes look directly into the port of the open cavity, the working laser in the optical fiber can burn the eyes of people. Therefore, when the device is not used, a protective cap for covering the port needs to be covered timely.
The existing optical cable adapter is mostly fixed with the adapter main body through the locking groove and the salient points, but because the intensity of the locking groove and the salient points is not high enough, the situation that the salient points fall off from the locking groove can occur in a long time, so that the dust cap is separated from the optical cable adapter, dust enters the ceramic sleeve, the connection loss of the optical fiber adapter is influenced, and the optical cable adapter cannot be sealed.
Disclosure of Invention
In order to solve the technical problems, the invention provides a buckle self-locking mechanism and an optical cable adapter.
The invention adopts the following technical scheme:
the utility model provides a buckle is from latch mechanism, includes dustproof cap and lower main part, the inside hollow cylinder of dustproof cap one end opening, the main part is the both ends open-ended hollow cylinder that has annular step down, including upper cover and lower cover, the dustproof cap of upper cover suit, the lower cover is equipped with the external screw thread, dustproof cap bottom sets up a plurality of wedge elastic components, the wedge elastic component is the decline wedge, and the upper cover is pressed to wedge elastic component roof pressure, on sheathe in and be equipped with the cooperation of wedge elastic component and inject dustproof cap and lower main part axial and the spacing subassembly of circumferential displacement.
Preferably, the limiting assembly is a wedge-shaped groove which is correspondingly arranged on the step matched with the wedge-shaped elastic piece on the upper sleeve, the wedge-shaped groove is in a descending wedge shape, and the wedge-shaped elastic piece is inserted into the matched wedge-shaped groove.
Preferably, the wedge recess includes wedge portion and extrusion step portion, and the wedge elastic component includes connecting portion and wedge head, wedge head and wedge portion interference fit.
Preferably, the wedge-shaped part forms an angle beta with the horizontal direction 2 Is smaller than the included angle beta between the wedge-shaped head of the wedge-shaped elastic piece and the horizontal direction 1 。
Preferably, the dustproof cap and the lower main body are plastic pieces, and a crease and a fracture surface are arranged between the connecting part of the wedge-shaped elastic piece and the wedge-shaped head part.
Preferably, the crease and the fracture surface comprise a crease part and a fracture surface part, the crease part is positioned on the inner side of an included angle between the connecting part and the wedge-shaped head part, and the fracture surface part is positioned on the outer side of the included angle between the connecting part and the wedge-shaped head part.
The limiting assembly further comprises at least one sliding groove formed in the upper sleeve, and a limiting block in sliding fit with the sliding groove is arranged on the outer side wall of the dustproof cap.
Preferably, the sliding groove is a J-shaped groove extending downwards from the top of the upper sleeve, and the limiting block is a cylindrical bump.
Preferably, the number of the sliding grooves and the limiting blocks is 2, the sliding grooves are arranged along the circumferential symmetrical interval of the upper sleeve, and the limiting blocks are arranged along the circumferential symmetrical interval of the dustproof cap.
The invention also provides an optical cable adapter which is characterized by comprising the buckle self-locking mechanism, an upper main body, a ceramic sleeve, a screwing nut and a dustproof plug, wherein the upper main body is tightly attached to the interior of the dustproof cap, cylindrical jacks are arranged in the upper main body and the lower main body, the ceramic sleeve is placed in the cylindrical jacks, the screwing nut is sleeved outside external threads of the lower sleeve, and the dustproof plug is inserted in the lower sleeve and is in contact with the ceramic sleeve.
Compared with the prior art, the invention has the advantages that:
1. according to the invention, the plurality of wedge-shaped elastic pieces are arranged at the bottom end of the dustproof cap in the circumferential direction and are wedge-shaped elastic pieces, and the dustproof cap and the lower main body can be tightly matched and are not easy to loosen after the dustproof cap and the lower main body are fixed in the axial direction and the circumferential direction through the limiting assemblies under the abutting action of the wedge-shaped elastic pieces.
2. The limiting assembly can adopt two replaceable structures, one structure is that at least one sliding groove is formed in the upper sleeve, the limiting block which is in sliding fit with the sliding groove is arranged on the outer side wall of the dustproof cap, and the dustproof cap can rotatably slide to the bottom of the sliding groove through the matching of the sliding groove and the limiting block. And secondly, a step which is matched with the wedge-shaped elastic piece is arranged on the upper sleeve, and is provided with a corresponding wedge-shaped groove, the wedge-shaped groove is in a descending wedge shape, the wedge-shaped elastic piece is inserted into the matched wedge-shaped groove, and the dust cap and the lower main body are fixed in the axial direction and the circumferential direction through the interference fit of the wedge-shaped elastic piece and the wedge-shaped groove. The two structures can realize the sealing of the middle gap after the dust cap is buckled with the lower main body through the wedge-shaped elastic piece, and the sealing effect of the adapter is improved.
Drawings
FIG. 1 is a cross-sectional view of a snap-in self-lock mechanism and cable adapter disclosed herein.
Fig. 2 is an exploded view of an embodiment of the present invention.
Fig. 3 is a sectional structural view of another embodiment of the present invention.
Fig. 4 is a sectional structural view of another embodiment of the present invention.
In the figure, the dustproof cap 1, the limiting block 11, the wedge-shaped elastic part 12, the connecting part 121, the wedge-shaped head 122, the lower main body 2, the upper sleeve 21, the lower sleeve 22, the chute 23, the upper main body 3, the annular groove 31, the ceramic bushing 4, the tightening nut 5, the dustproof plug 6, the jack 7, the double-layer step 8, the O-shaped ring 9 and the sealing ring 10.
Detailed Description
In order to facilitate understanding of the technical solutions of the present invention, the following detailed description is made with reference to the accompanying drawings and specific embodiments.
Example 1:
as shown in fig. 1 and 2, the invention discloses a buckle self-locking mechanism and an optical cable adapter adopting the same, main parts adopt plastic parts, the embodiment adopts ABS material, the buckle self-locking mechanism comprises a dust cap 1 and a lower main body 2, the dust cap 1 has a hollow cylinder with an opening at one end, the lower main body 2 is a hollow cylinder with two open ends and annular steps, and comprises an upper sleeve 21 and a lower sleeve 22, the lower sleeve 22 is provided with external threads, the lower main body 2 is tightly attached to the interior of the dust cap 1, two symmetrical sliding grooves 23 are formed in the wall of the upper sleeve 21, the sliding grooves 23 are J-shaped grooves with openings at the highest points, the sliding grooves 23 are in shapes including J-shaped guide groove portions and limiting groove portions with upward bent bottom ends of the J-shaped guide groove portions, the outer side wall of the dust cap 1 is provided with limiting blocks 11 matched with the two sliding grooves 23, the limiting blocks 11 are cylindrical bumps, and the limiting groove portions of the limiting blocks 11 can slide to the J-shaped sliding grooves 23 from top along the L-shaped sliding grooves 23, so as to fix the dust cap 1 on the lower main body 2.
Four wedge-shaped elastic pieces 12 are uniformly distributed at the bottom end of the dustproof cap 1 in the circumferential direction; the dustproof cap is characterized in that the wedge-shaped elastic part 12 is in a descending wedge shape, the wedge-shaped elastic part 12 pushes the upper sleeve 21 to form a step, a limiting component which is matched with the wedge-shaped elastic part 12 to limit axial and circumferential movement of the dustproof cap 1 and the lower main body 2 is arranged on the upper sleeve 21, and the limiting component is a sliding groove 23 formed in the upper sleeve 21 and a limiting block 11 matched with the sliding groove 23.
The invention relates to an optical cable adapter which comprises an upper main body 3, a ceramic sleeve 4, a screwing nut 5 and a dustproof plug 6, wherein the upper main body 3 is tightly attached to the interior of a dustproof cap 1, cylindrical jacks 7 are respectively arranged in the upper main body 3 and a lower main body 2, the ceramic sleeve 4 is communicated in the cylindrical jacks, the screwing nut 5 is sleeved outside external threads of a lower sleeve 22, and the dustproof plug 6 is inserted in the lower sleeve 22 and is contacted with the ceramic sleeve 4; the inner side wall of the upper sleeve of the lower main body 2 is provided with a double-layer step 8, and the upper main body 3 is propped against the inner step; the outer side wall of the upper main body 3 is provided with an annular groove 31, and an O-shaped ring 9 is sleeved outside the annular groove 31; a sealing ring 10 is arranged between the tightening nut 5 and the lower main body 2, and the sealing ring is connected with a connecting rope.
The ceramic tube 4 is arranged inside the upper main body 3 and the lower main body 2, the opposite end parts of the upper main body 3 and the lower main body 2 are respectively provided with a cylindrical jack 7, one end of the ceramic sleeve 4 can realize the insertion positioning operation of the ceramic ferrule of the tail fiber inside the equipment and the adapter, and the other end can be used for the insertion positioning operation of the ceramic ferrule of the prefabricated optical cable assembly; the arrangement of the ceramic sleeve 4 can ensure that the two ceramic ferrules are on the same axis, thereby effectively reducing the attenuation of optical signals.
The tightening nut 5 is sleeved outside the lower sleeve of the lower main body, and the tightening nut 5 can be used for realizing the fixed connection between the adapter and the shell of the pre-connection joint box or the pre-connection terminal box; above-mentioned screw up the nut and can be threaded connection down between the main part 3, screw up the nut and be equipped with the internal thread, the adapter body lower cover is provided with the external screw thread that matches each other.
It should be noted that the integral injection molding piece is adopted when the upper main body is milled, the upper main body is in a connection form after the milling piece, and the second end of the connecting rope can also form a second sealing ring, namely, the end can meet the connection requirement of the dust cap, and the sealing performance of the adapter body can be improved. When construction work is carried out, the adapter dust cap 23 which needs to be connected with the adapter can be removed, and subsequent plugging operation can be carried out.
The outer side of the upper body 3 of the adapter is also provided with an annular groove 31, and an O-shaped ring 9 is arranged in the annular groove 31; above-mentioned O type circle 9's setting not only can improve the sealing performance of adapter dust cap 23, can also improve the grafting sealing performance with prefabricated optical cable subassembly.
Inserting the dust cap 1 into the adapter body, wherein the convex points on the outer side wall of the dust cap can slide in from the higher top point of the sliding groove of the lower main body; when the dustproof cap sleeve cannot move continuously, the convex point of the outer side wall is positioned at the lower vertex of the sliding groove; rotatable dust cap is from the higher summit of the J-shaped spout of lower main part to lower summit, and concrete chucking is in the chucking intracavity that lower summit formed, and aforementioned slope decurrent colludes shape plastics elastic component and is in compression state, and under the elastic action of elastic component, the top that the bump can be firmly is tight in the chucking intracavity, can guarantee that prefabricated optical cable subassembly can not deviate from the adapter when not receiving external force rotation.
In this embodiment, the optical fiber is sleeved in the ceramic sleeve, when the optical fiber is connected, the optical fiber adapter is butted with the pre-connection splice box and the optical fiber connector, so that one side of the optical fiber adapter can be butted with the pigtail of the pre-connection splice box and the ceramic sleeve connected with the other side of the optical fiber adapter (a common optical fiber connector, such as the optical fiber connector in the form of threaded connection described in the background art is butted with the optical cable, when the optical fiber connector and the optical fiber adapter are butted in a manner of circumferential alignment with each other, the dust cap rotates by some angle relative to the lower body so that the stopper can be guided into the locking position of the chute through the J-shaped opening of the chute, the wedge-shaped elastic member at the bottom end of the dust cap can move along with the stopper due to elastic deformation, when the stopper moves into the locking position, the wedge-shaped elastic member can exert an abutting action on the stopper due to its own elasticity, so as to achieve the locking purpose of the dust cap and the lower body of the adapter, that the stopper can be guided into the locking position of the stopper of the optical fiber adapter only after the ceramic sleeve and the optical fiber adapter are butted together, so that the stopper and the stopper assembly can be locked without the need to be rotated, and the sealing connection of the optical fiber adapter, the invention, which can be more stable in the sealing connection of the invention.
Example 2:
as shown in fig. 3, the present embodiment is a buckle self-locking mechanism with another structure, the buckle self-locking mechanism includes a dust cap 1 and a lower main body 2, the dust cap 1 has an opening at one end and is a hollow cylinder, the lower main body 2 is a hollow cylinder with two openings at two ends and an annular step, and includes an upper sleeve 21 and a lower sleeve 22, and the lower sleeve 22 is provided with an external thread. Four wedge-shaped elastic pieces 12 are uniformly distributed at the bottom end of the dustproof cap 1 in the circumferential direction; the wedge-shaped elastic part 12 is in a descending wedge shape, the wedge-shaped elastic part 12 pushes the upper sleeve 21 to form a step, a limiting component which is matched with the wedge-shaped elastic part 12 to limit axial and circumferential movement of the dust cap 1 and the lower main body 2 is arranged on the upper sleeve 21, the limiting component is a corresponding wedge-shaped groove 24 arranged on the step, matched with the wedge-shaped elastic part 12, on the upper sleeve 21, the wedge-shaped groove 24 is also in a descending wedge shape, and the wedge-shaped elastic part 12 is inserted into the matched wedge-shaped groove 24; the wedge-shaped groove 24 comprises a wedge-shaped groove portion 241 and an insertion portion 242, the wedge-shaped elastic piece 12 comprises a wedge-shaped head portion 122 and a connecting portion 121, and the wedge-shaped groove portion 241 is in interference fit with the wedge-shaped head portion 122. In order to achieve that the wedge-groove portion 241 presses the wedge-head portion 122, said wedge-portion 241 forms an angle β with the horizontal direction 2 Is smaller than the included angle beta between the wedge-shaped head 122 and the horizontal direction 1 For example, an included angle between the wedge-shaped groove 241 and the horizontal direction is 5 ° to 15 °, the left end of the extrusion step 242 is provided with an arc transition, an included angle between the right end and the horizontal direction is close to 90 °, in this embodiment, 10 °, and an included angle between the wedge-shaped head and the horizontal direction is 7 °, and after the wedge-shaped head slides into the wedge-shaped groove 241, the angle difference guides the wedge-shaped head to deform, so that the interference fit between the wedge-shaped part 241 and the wedge-shaped elastic member 12 is finally realized, and the dust cap 1 and the lower main body 2 are fixed in the axial direction and the circumferential direction; and the wedge 241 forms an angle beta with the horizontal 2 The larger size makes it easier for the wedge 241 to be inserted downward into the wedge groove 24.
In this embodiment, the height of wedge recess 24 is less than the height of wedge elastic component 12, when using, only need to rotate dust cap to extrusion step 242, and aim at extrusion step 242 open end with wedge head 122 of wedge elastic component 12 and push down, wedge elastic component 12 slides in wedge recess 24 along the circular arc type transition that extrusion step 242 left end set up, closely cooperate with wedge 241 of wedge recess 24 and the wedge head 122 of wedge elastic component 12 under the elastic action of wedge elastic component 12, prevent that wedge elastic component 12 from taking place to become flexible in the vertical direction, extrusion step 242 right-hand member can support wedge elastic component 12 right-hand member and hold, prevent that wedge elastic component 12 from taking place to become flexible in the horizontal direction, wedge 241 and extrusion step 242 of wedge recess 24 carry out spacingly to wedge elastic component 12, realize the sealing of dust cap and lower main part, simple structure, convenient operation.
Example 3:
as shown in fig. 4, the main technical solution of this embodiment is the same as that of embodiment 2, except that the dust cap 1 and the lower body 2 are made of ABS plastic, the wedge-shaped elastic member 12 is in the shape of a hook facing leftward, and a fold and a fracture surface 123 are provided between the connecting portion 121 and the wedge-shaped head portion 122. The folding line and breaking plane 123 includes a folding line part and a breaking plane part, the folding line part is located at the inner side of the included angle between the connecting part 121 and the wedge-shaped head 122, and the breaking plane part is located at the outer side of the included angle between the connecting part 121 and the wedge-shaped head 122. The technical effect of the crease and the fracture surface is that after the wedge-shaped elastic piece 12 is extruded, the wedge-shaped elastic piece 12 is separated from the wedge-shaped groove 24 under the condition of external vibration due to stress action, and the stress is eliminated through the crease portion and the fracture surface portion, so that the separation caused by vibration is prevented.
The above is only a preferred embodiment of the present invention, and the scope of the present invention is defined by the appended claims, and several modifications and amendments made by those skilled in the art without departing from the spirit and scope of the present invention should be construed as the scope of the present invention.
Claims (10)
1. The utility model provides a buckle self-locking mechanism, includes dustproof cap (1) and lower main part (2), the inside hollow cylinder of dustproof cap (1) one end opening, lower main part (2) are both ends open-ended and have the hollow cylinder of annular step, including upper cover (21) and lower cover (22), upper cover (21) suit dustproof cap (1), lower cover (22) are equipped with the external screw thread, a serial communication port, dustproof cap (1) bottom sets up a plurality of wedge elastic component (12), wedge elastic component (12) are descending wedge, and wedge elastic component (12) roof pressure upper cover (21), be equipped with on upper cover (21) and inject dustproof cap (1) and lower main part (2) axial and circumferential movement's spacing subassembly with wedge elastic component (12) cooperation.
2. A snap self-locking mechanism according to claim 1, wherein said limiting means is a corresponding wedge-shaped groove (24) provided on the step of the upper sleeve (21) cooperating with the wedge-shaped elastic member (12), said wedge-shaped groove (24) is a descending wedge, and the wedge-shaped elastic member (12) is inserted into the cooperating wedge-shaped groove (24).
3. A snap self-locking mechanism according to claim 2, wherein the wedge-shaped recess (24) comprises a wedge portion (241) and a pressing step portion (242), the wedge-shaped spring (12) comprises a connecting portion (121) and a wedge-shaped head portion (122), and the wedge-shaped head portion (122) is in interference fit with the wedge portion (241).
4. A snap self-locking mechanism according to claim 3, wherein said wedge (241) is angled from horizontal by an angle β 2 Is smaller than the included angle beta between the wedge-shaped head (122) of the wedge-shaped elastic piece (12) and the horizontal direction 1 。
5. A snap self-locking mechanism according to claim 2, wherein the dust cap (1) and the lower body (2) are plastic parts, and wherein a fold and a fracture surface (123) are provided between the connecting part (121) of the wedge-shaped elastic member (12) and the wedge-shaped head (122).
6. A snap self-locking mechanism according to claim 5, wherein the crease and break surface (123) comprises a crease portion and a break surface portion, the crease portion being located inside the angle between the connecting portion (121) and the wedge-shaped head portion (122), and the break surface portion being located outside the angle between the connecting portion (121) and the wedge-shaped head portion (122).
7. A self-locking mechanism according to claim 1, wherein said limiting member is at least one sliding groove (23) formed in the upper sleeve (21), and the outer side wall of said dust cap (1) is provided with a limiting block (11) sliding fitted along said sliding groove (23).
8. A snap self-locking mechanism according to claim 7, wherein said runner (23) is a J-shaped groove extending downwards from the top of the sleeve, and said stopper (11) is a cylindrical protrusion.
9. The self-locking buckle mechanism according to claim 8, wherein the number of the sliding grooves (23) and the limiting blocks (11) is 2, the sliding grooves (23) are symmetrically arranged along the circumferential direction of the upper sleeve (21) at intervals, and the limiting blocks (11) are symmetrically arranged along the circumferential direction of the dust cap (1) at intervals.
10. An optical fiber adapter, characterized in that, includes a buckle from lock mechanism of claim 1-9, still includes main part (3), ceramic bushing (4), screw up nut (5) and dustproof stopper (6), go up main part (3) and hug closely inside dustproof cap (1), go up main part (3), main part (2) are inside all to set up cylinder jack (7) down, place ceramic bushing (4) in the cylinder jack, screw up nut (5) cover and establish the external screw thread outside of lower cover (22), dustproof stopper (6) are inserted inside lower cover (22) and are contacted with ceramic bushing (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221214101.5U CN218122297U (en) | 2022-05-20 | 2022-05-20 | Buckle self-locking mechanism and optical fiber adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221214101.5U CN218122297U (en) | 2022-05-20 | 2022-05-20 | Buckle self-locking mechanism and optical fiber adapter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218122297U true CN218122297U (en) | 2022-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221214101.5U Active CN218122297U (en) | 2022-05-20 | 2022-05-20 | Buckle self-locking mechanism and optical fiber adapter |
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| Country | Link |
|---|---|
| CN (1) | CN218122297U (en) |
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- 2022-05-20 CN CN202221214101.5U patent/CN218122297U/en active Active
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